PSYB32H3 Lecture Notes - Lecture 4: Rorschach Test, Criterion Validity, Content Validity
3 Oct 2012
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Assessment is important because it can tell one what is wrong with the patient (symptoms), also it can tell what is causing the symptoms, and finally how the symptoms can be improved. Psychologist will also evaluated the efficacy of treatment through assessment. Reliability: the consistency of the measurement; we measure it using correlation (stronger the correlation, the more reliable the test) Test-retest reliability: the extent to which people being observed or tested on more than one occasion score in the same way. Inter-rater reliability: same observations by two sets of people looking at the same symptom. Alternate-form reliability: extent to which scores on two forms of tests are consistent (to ensure that a person does not simply remember the correct answers from a previous time) Internal consistency reliability: items on a test are related to one another. Construct validity: relevant when we want to interpret a test as a measure of some characteristic or construct that is not simply defined.
